I would really like to see some old hip-hop song in the set like Step Up (it's been about 9 years since the last performance) or Dedicated (full song live debut).
It Goes Through was on Mike's playlist before the tour started, so he was considering it. I hope gets played at some point, it's one of my favorite Linkin Park related songs.
The Dia de Los Deftones show would definitely be perfect for a Lift Off live debut. Another Post Traumatic song I'd really like to see live is Nothing Makes Sense Anymore. Can't believe it hasn't been played yet considering all other pre-release songs were.